It really does sound as though you need an antibiotic to clear up the infection. Until you can see your doctor try inhaling steam from a bowl of boiling water, add Albos Oil if you have any or even a spoonful of Vicks, with a towel over your head. It relieves the chest tightness and helps the sinuses and eardrums. Honey is very good if you have a sore throat. It has slight antibiotic properties and it's very soothing. Swallow a teaspoonful, slowly, every couple of hours and drink it mixed with hot lemon juice - you can add whisky, it won't do any good but you may like it.
Take paracetamol every 4 to 5 hours and get as much rest as you can.
Get well soon.
